Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Simultaneous deplating and plating
Patent
1992-06-05
1993-12-14
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Simultaneous deplating and plating
205106, 205213, 205215, 205216, 205219, C25D 544, C25D 1104
Patent
active
052699048
ABSTRACT:
The invention is a single-bath electrolytic de-oxidation and anodization process in which a workpiece surface such as an aluminum surface is electrolytically de-oxidized and then anodized to form an adhesive oxide layer in the same electrolytic chemical bath without removing the workpiece from the bath. Upon completion of the anodization step, the piece is rinsed in a water bath. The invention further includes recirculating the electrolytic bath through a filter to suppress contaminant levels in the bath to prevent metal ion or organic contaminants from the de-oxidation step from compromising the integrity of the anodization step.
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Fong Calvin C.
Viktora Rimas
Anderson Terry J.
Block Robert B.
Hoch Jr. Karl J.
Leader William T.
Niebling John
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